#include "MqttEntity.h"
#include "common/Spdlogger.h"
#include "common/JsonN.h"

#define TIMEOUT 10000L

int MqttClient::init(string addr, string client_id, string username, string password, std::vector<std::string> vecTopic)
{
	this->addr = addr;
	this->vecTopic = vecTopic;

	MQTTAsync_connectOptions option = MQTTAsync_connectOptions_initializer;
	MQTTAsync_message pubmsg = MQTTAsync_message_initializer;
	int rc {0};

	// "tcp://localhost:1883"
	rc = MQTTAsync_create(&client, addr.c_str(), client_id.c_str(), MQTTCLIENT_PERSISTENCE_NONE, NULL);
	if (rc != MQTTASYNC_SUCCESS)
	{
		spdlog::error("[mqtt] MQTTAsync_create error: {}", rc);
		return rc;
	}

	MQTTAsync_connectionLost* onConnectionLost = 
		[](void* context, char* cause)
		{
			static_cast<MqttClient*>(context)->onConnectionLost(cause);
		};
	MQTTAsync_messageArrived* onMessageArrived =
		[](void* context, char* topicName, int topicLen, MQTTAsync_message* message)->int 
		{
			return static_cast<MqttClient*>(context)->onMessageArrived(topicName, topicLen, message);
		};
	MQTTAsync_deliveryComplete* onDeliveryComplete =
		[](void* context, MQTTAsync_token token) 
		{
		};


	//设置连接丢失、接受消息的回调函数
	rc = MQTTAsync_setCallbacks(client, this, onConnectionLost, onMessageArrived, onDeliveryComplete);
	if (rc != MQTTASYNC_SUCCESS)
	{
		spdlog::error("[mqtt] MQTTAsync_setCallbacks error");
		return rc;
	}

	option.keepAliveInterval = 20;
	option.cleansession = 1;
	option.onSuccess = [](void* context, MQTTAsync_successData* resp)  { static_cast<MqttClient*>(context)->onConnectSuccess(resp); };;
	option.onFailure = [](void* context, MQTTAsync_failureData* resp) { static_cast<MqttClient*>(context)->onConnectFaiure(resp); };
	option.context = this;
	option.username = username.c_str();
	option.password = password.c_str();

	//断开重连设置
	option.automaticReconnect = 1;//设置非零，断开自动重连
	option.minRetryInterval = 5; //单位秒，重连间隔次数，每次重新连接失败时，重试间隔都会加倍，直到最大间隔
	option.maxRetryInterval = 60;//单位秒，最大重连尝试间隔

	rc = MQTTAsync_connect(client, &option);
	if (rc != MQTTASYNC_SUCCESS)
	{
		spdlog::error("[mqtt] MQTTAsync_connect error");
		return rc;
	}
	return 0;

	//MQTTAsync_disconnect(client, NULL);
	//MQTTAsync_destroy(&client);
}

struct SubscribInfo
{
	std::function<void(int id)> callback;
};

void MqttClient::subscribe(std::vector<std::string> vecTopics, std::function<void(int)> callback)
{
	SubscribInfo* info = new SubscribInfo();
	info->callback = callback;

	MQTTAsync_responseOptions options = MQTTAsync_responseOptions_initializer;
	options.context = info;
	options.onSuccess = [](void* context, MQTTAsync_successData* response)
		{
			spdlog::info("[mqtt] subscribe success.");
			SubscribInfo* info = (SubscribInfo*)context;
			info->callback(0);
			delete info;
			
		};
	options.onFailure = [](void* context, MQTTAsync_failureData* response)
		{
			spdlog::error("[mqtt] subscribe failed.");
			SubscribInfo* info = (SubscribInfo*)context;
			info->callback(-1);
			delete info;
		};


	int count = 3;
	char* topicsTmp[] = {
		"topic/aa",
		"topic/bb",
		"topic/cc" 
	};
	std::vector<int> qosTmp(count, 1); // 为每个主题指定 QoS

	if (count > 0)
	{
		int rc = MQTTAsync_subscribeMany(client, count, topicsTmp, qosTmp.data(), &options);
		if (rc != MQTTASYNC_SUCCESS)
		{
			spdlog::error("[mqtt] subscribe failed, err={}", rc);
		}
	}
	else
	{
		delete info;
	}
}

int MqttClient::publish(string topic, string text)
{
	spdlog::info("MQTT publish: topic={}, text={}", topic, text);

	MQTTAsync_responseOptions options = MQTTAsync_responseOptions_initializer;
	//options.onSuccess = onSend;
	//options.onFailure = onSendFailure;
	options.context = this;

	MQTTAsync_message msg = MQTTAsync_message_initializer;
	msg.qos = 1;
	msg.payload = text.data();
	msg.payloadlen = text.size();
	msg.retained = 0;

	int rc = MQTTAsync_sendMessage(client, topic.c_str(), &msg, &options);
	if (rc == MQTTASYNC_SUCCESS)
	{
		spdlog::info("MQTT send message success, topic={}, text={}", topic, text);
	}
	else
	{
		spdlog::error("MQTT send message error, topic={}, text={}", topic, text);
	}
	return rc;
}

void MqttClient::onConnectionLost(char* cause)
{
	this->isConnected = false;
	spdlog::error("MQTT connection lost, cause={}", cause);
}

int MqttClient::onMessageArrived(char* topic, int topicLen, MQTTAsync_message* msg)
{
	int len = msg->payloadlen;
	char* payload = (char*)msg->payload;
	spdlog::info("MQTT message arrived: topic=[{},{}], payload len={}, payload msg={}", topic, msg->qos, len, payload);

	// 必须释放消息内存！
	MQTTAsync_freeMessage(&msg);
	MQTTAsync_free(topic);
	return 1; // 1表示消息已经处理
}

// 交付完成回调（可选）
void MqttClient::onDeliveryComplete(MQTTAsync_token token) 
{
	//spdlog::info("MQTT delivery complete, token={}", token);
}


void MqttClient::onConnectSuccess( MQTTAsync_successData* resp)
{
	this->isConnected = true;
	//spdlog::info("[mqtt] connect success: {}", addr);
	//MQTTAsync_responseOptions options = MQTTAsync_responseOptions_initializer;
	//options.context = this;
	//options.onSuccess = [](void* context, MQTTAsync_successData* response) 
	//	{
	//		spdlog::info("[mqtt] subscribe success.");
	//	};
	//options.onFailure = [](void* context, MQTTAsync_failureData* response) 
	//	{
	//		spdlog::info("[mqtt] subscribe failed.");
	//	};
	//
	//for (auto& topic: vecTopic)
	//{
	//	int rc = MQTTAsync_subscribe(client, topic.c_str(), qos, &options);
	//	if (rc != MQTTASYNC_SUCCESS) 
	//	{
	//		spdlog::error("[mqtt] subscribe [{},{}] failed, err={}", topic, qos, rc);
	//	}
	//	else
	//	{
	//		spdlog::info("[mqtt] subscribe [{},{}] success", topic, qos);
	//	}
	//}
}
void MqttClient::onConnectFaiure(MQTTAsync_failureData* resp)
{
	this->isConnected = false;
}

string MQTT::packEquipmentInfo(mqtt::EquipmentInfo& info)
{
	NJsonNode jsonroot;
	jsonroot["EquipmentID"] = info.EquipmentID.c_str();
	jsonroot["ManufacturerID"] = info.ManufacturerID.c_str();
	jsonroot["EquipmentModel"] = info.EquipmentModel.c_str();
	jsonroot["ProductionDate"] = info.ProductionDate.c_str();
	jsonroot["OpenForBusinessDate"] = info.OpenForBusinessDate.c_str();
	jsonroot["EquipmentType"] = info.EquipmentType;
	return jsonroot.dump();
}


string MQTT::packSwapEquipmentStatusInfo(string node_id)
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}


string MQTT::packNotifyStationInfo()
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}


string MQTT::packNotifyAlarm()
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}

string MQTT::packNotifyChargeStatus()
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}

string MQTT::packNotifySwapStatus()
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}

string MQTT::packNotifyChargeOrder()
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}


string MQTT::packNotifySwapOrder()
{
	NJsonNode jsonroot;
	return jsonroot.dump();
}